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Advocard [28]
3 years ago
13

Factor the quadratic expression. 3x^2-2x-5

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
3 0

first subtract 2 from - 5 which is 7 then subtract 3-2 then you would get x = 7 that would be my guess.

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The value is 64 hope this help
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If you need 30 teaspoons of vanilla extract and vanilla is sold in a 4 oz. bottle, how many bottles of vanilla should you buy?
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4 0
3 years ago
ILL GIVE BRAINLY THING
kvasek [131]

Answer:

A) A = 4x^2 - x - 5

B) f(2) = 9

Step-by-step explanation:

area is L x W, so you multiply 4x - 5 with x + 1

A = (4x - 5)(x + 1)

which gives you

A = 4x^2 - x - 5

you would then plug in 2 for x which gives you your answer of

9

Hope this helps you :)

8 0
3 years ago
Help please I don’t understand this
ELEN [110]

Answer:

x=-2

sorry i messed up coord val :/

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIEST!!!!! PLS HELP ASAP!!!! 100 POINTS!!!!!!
PSYCHO15rus [73]

Answer:

the linear function gives us the points

(0,3)

(4,0)

(8,-3)

find the equation

hm

find slope

(y2-y1)/(x2-x1)

for (0,3) and (4,0)

slope=(0-3)/(4-0)=-3/4

y=-3/4x+b

given

(0,3)

y=-3/4x+3

so sub -3/4x+3 for y in other equation

(-3/4x+3)^2+x^2=4

expand

9/2x^2-9/2x+9+x^2=4

11/2x^2-9/2x+9=4

times 2 both sides

11x^2-9x+18=8

minus 8 both sides

11x^2-9x+10=0

factor

or use quadratic formula

for

ax^2+bx+c=0

x=\frac{-b+/- \sqrt{b^2-4ac} }{2a}

2a

−b+/−

b

2

−4ac

11x^2-9x+10=0

x=\frac{-(-9)+/- \sqrt{(-9)^2-4(11)(10)} }{2(11)}

2(11)

−(−9)+/−

(−9)

2

−4(11)(10)

x=\frac{9+/- \sqrt{81-440} }{22}

22

9+/−

81−440

x=\frac{9+/- \sqrt{-359} }{22}

22

9+/−

−359

we see we have no real roots

there are no intersection points

#Carry on learning

#Correct me if I'm wrong

6 0
3 years ago
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